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Associations

provided by BioImages, the virtual fieldguide, UK
Foodplant / spot causer
mostly hypophyllous colony of Cercospora dematiaceous anamorph of Cercospora comari causes spots on live leaf of Potentilla palustris

Foodplant / saprobe
immersed perithecium of Gnomonia comari is saprobic on dead stem of Potentilla palustris
Remarks: season: 6

Foodplant / pathogen
amphigenous colony of Mycocentrospora anamorph of Mycocentrospora acerina infects and damages live leaf of Potentilla palustris

In Great Britain and/or Ireland:
Foodplant / spot causer
Physoderma comari causes spots on live leaf of Potentilla palustris

Foodplant / feeds on
larva of Phytobius comari feeds on Potentilla palustris

Foodplant / parasite
Podosphaera aphanis parasitises live Potentilla palustris

Foodplant / sap sucker
Rhopalus maculatus sucks sap of Potentilla palustris
Other: major host/prey

Foodplant / spot causer
amphigenous, immersed pseudothecium of Venturia palustris causes spots on live leaf of Potentilla palustris

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Description

provided by eFloras
Herbs perennial, 20–30 cm tall. Rhizome branched, dark brown, long, woody. Flowering stems ascending, branched near base, pale red-brown, hollow, glabrous in lower part, hairy in upper part. Radical leaves 6–16 cm including petiole; stipules mostly adnate to petiole, membranous; petiole 2.5–12 cm; leaf blade imparipinnate, 5–7-foliolate; upper cauline leaves: stipules ovate, foliaceous, apex often serrate; leaf blade 3-foliolate; leaflets sessile or subsessile, adaxially dark green, elliptic or oblong, 4–7 × 1.2–3 cm, abaxially villous, adaxially glabrous or slightly appressed pilose, base cuneate, margin proximally entire, distally sharply serrate, apex obtuse or acute. Inflorescence terminal or axillary, cymose, 1- to several flowered; peduncle and pedicels pilose and glandular hairy. Flowers 1–1.5 cm in diam.; pedicel 1–1.5 cm; bracts conic, 3–5 mm. Hypanthium saucer-shaped, abaxially pilose. Sepals spreading, dark purple, triangular-ovate, 0.7–1.8 cm, both surfaces pilose, apex acuminate; epicalyx segments lanceolate to linear, 4–9 mm, abaxially pilose, apex acute or acuminate. Petals dark purple, ovate-lanceolate, 3–8 mm, shorter than sepals, apex acuminate. Stamens 15–25, shorter than the petals; filaments and anthers dark purple. Ovary dark purple, ovoid, glabrous; style filiform. Achenes numerous, yellow-brown, compressed ovoid, ca. 1 mm, glabrous. Fl. May–Aug, fr. Jul–Oct.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 9: 329 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
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Flora of China @ eFloras.org
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Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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Habitat & Distribution

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Marshes, fens, bogs. Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol [Japan, Korea, Mongolia, Russia; Europe, North America].
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 9: 329 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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eFloras

Synonym

provided by eFloras
Fragaria palustris (Linnaeus) Crantz; Potentilla comarum Nestler, nom. illeg. (included Comarum palustre); P. palustris (Linnaeus) Scopoli.
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Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of China Vol. 9: 329 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of China @ eFloras.org
editor
Wu Zhengyi, Peter H. Raven & Hong Deyuan
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eFloras.org
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eFloras

Comprehensive Description

provided by North American Flora
Comarum palustre L. Sp. PI. 502. 1753
Fragaria palustris Crantz, Stirp. Austr. 2 : 11. 1766. Potentilla palustris Scop. Fl. Cam. ed. 2. 1 : 359. 1772. Argentina rubra Lam. Fl. Fr. 3: 120. 1778. Pole?itilla Comarum Nestler, Monog. Potent. 36. 1814. Comarum digitatum Raf. Fl. Tell. 2 : 55. 1837. Comarum angushfolium parvifolium Raf. Aut. Bot. 170. 1840. Comarum angustifolium Raf. PL Tell. 2 : 56. 1837. Comarum palustre villosum Pers. Syn. 2 : 58. 1806. Comarum lomenlosum Raf. Aut. Bot. 170. 1840. Potentilla palustris villosa Lehm. Stirp. Pug:. 9 : 44. 1851.
Perennial, with a creeping rootstock ; stem ascending, 2-5 dm. high, more or less hirsute with short spreading hairs, somewhat glandular on the upper portion (in the varietyvillosum densely villous and with copious glands), subglabrous on the lower portion, somewhat striate, brownish or reddish in color, shining; lower stipules brown, scarious and wholly adnate to the petioles ; the upper with free tips, lanceolate or ovate, foliaceous ; lower leaves with petioles 3-10 cm. long, the upper subsessile, all pinnate, with 5-7 more or less approximate leaflets, green above, paler and pur pieveined beneath, sparingly hairy, in age glabrate, or in the variety villosum densely velvety on both sides when young ; leaflets in the typical form elliptic or oval, mostly acute at both ends, with broad ovate teeth, in the more common American form ( C. angustifolium Raf. ) linear-oblong, 5-8 cm. long and only 1-2 cm. wide, obtuse or rounded at the apex and with lanceolate teeth; cyme leafy, few-flowered; hypanthium in flower 7-8 mm., in fruit about 15 mm. in diameter, short-pilose and glandular-pubescent; bractlets narrowly lanceolate, scarcely half as long as the broadly ovate to lanceolate, acuminate sepals, which are about 1 cm. long in flower and 1.5 cm. in fruit; petals, stamens, styles, and the inner side of the sepals darkpurple ; petals spatulate or ovate, acuminate or acute, scarcely half as long as the sepals.
Type locality : Europe.
Distribution : Northern and subalpine Europe and Asia; also subarctic and arctic America, from Greenland and Labrador to Alaska ; the narrow-leaved form extending south to New England, Minnesota, Wyoming, and California.
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bibliographic citation
Per Axel Rydberg. 1908. ROSACEAE (pars). North American flora. vol 22(4). New York Botanical Garden, New York, NY
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Comarum palustre

provided by wikipedia EN

Comarum palustre (syn. Potentilla palustris), known by the common names purple marshlocks, swamp cinquefoil and marsh cinquefoil,[1] is a common waterside shrub. It has a circumboreal distribution, occurring throughout North America, Europe, and Asia, particularly the northern regions. It is most commonly found on lake shores, marshy riversides and stream margins, often partly submerged with foliage floating. It is a parent of some FragariaComarum hybrids, ornamental plants produced by crossing with strawberries.

Description

Its branches spread into leaves with three to seven narrow leaflets which are sharply jagged. The stem is a reddish-brown, low sprawling, vine-like structure. Flowers extend from the branch which vary from red to purple, and are about one inch in diameter, blooming in summer. The stems roots at the base then rises to about 30 cm (12 in).[2]

Cultivation

Swamp cinquefoil prefers peat soils but can also grow in moist sandy areas. It flourishes in USDA Zone 3 (minimum −40 °F or −40 °C). It grows to about 12–18 in (30–46 cm) wide by 12–18 in (30–46 cm) high when cultivated properly.

References

  1. ^ BSBI List 2007 (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  2. ^ Parnell, J. and Curtis, T. 2012. Webb's An Irish Flora. Cork University Press.ISBN 978-185918-4783
Wikimedia Commons has media related to Comarum palustre.

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Comarum palustre: Brief Summary

provided by wikipedia EN

Comarum palustre (syn. Potentilla palustris), known by the common names purple marshlocks, swamp cinquefoil and marsh cinquefoil, is a common waterside shrub. It has a circumboreal distribution, occurring throughout North America, Europe, and Asia, particularly the northern regions. It is most commonly found on lake shores, marshy riversides and stream margins, often partly submerged with foliage floating. It is a parent of some Fragaria–Comarum hybrids, ornamental plants produced by crossing with strawberries.

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